dairy health calculations

Question 1

TNR ?

Answer 1

Total net return per calving interval

Question 2

yearly net return is calculated how?

Answer 2

TNR x 365 / length of the calving interval connected

Question 3

how can we calculate the optimal calving interval?

Answer 3

Max (TNR; 365/Li)

Question 4

How can we calculate the net milk receipts?

Answer 4

net receipts per cow per milk

Question 5

how can we calculate the decreased net milk receipt?

Answer 5

step 1 - the net milk receipts per cow per milk: milk yield of lactation x milk price
step 2 - the losses in net milk receipts per cow per milk gross milk receipts - feed costs

Question 6

how can we calculatet the gross milk receipts?

Answer 6

milk yield of lactation x milk price

Question 7

how can we calculate the net milk receipts?

Answer 7

gross milk receipts - feed costs

Question 8

how do we calculate the decreased calf sales?

Answer 8

365/calving interval (days) x (number of calves born per year x (calf price - calfs raising cost until selling)

Question 9

how to calculate the raising cost per 1 liter milk?

Answer 9

(raising cost of first calf heifer - slaughter value of culled cow ) / life time production

Question 10

How do we calculate the cost of culling?

Answer 10

cost of replacement - slaughter value of culled cow